mcmillan



Dec. 27, 1927.

1,654,137 1.. B. MCMILLAN INSULATION CONSTRUCTION Filed Jan. 10,; 1925 INVENTOR mawhwmlw ATTORNEY- Patented .27,

UNETED STATES (3 F F l F PATENT LUTHER B, IYICMILLIELN, OF LAROHMONT, NEW YORK. .f:-.SSIGI-TOR TO JOHNS-MANVILLE CORPORATION, OF NEW' YORK, N. 2., A CORPORATION OF NEW YORK.

INSULATION CONSTRUCTION.

Application filed Januar My invention relates to an insulation construction and particularly to that class of insulation construction which includes a block or se'tion built up of a plurality of felts cemented or otherwise secured together.

Built-up constructions of the character just indicated, as heretofore made, have lacked mechanical strength, or those constructions which have been reinforced with metallic inserts or otherwise strengthened have been relatively heavy, are costly to manufacture and often lack the essential quality of being good insulators.

It is an object of my invention, therefore, to provide a construction in which the objections heretofore noted will be in a large measure overcome and to provide a built-rm construction which will have good insulating qualities, will be extremely light, will be relatively cheap to manufacture. and which will possess great mechanical strength.

It is a more specific object to provide a construction in which there are one or more corrugated or irregular-shaped felts, in which at least one side of the latter is completely covered or coated on one side with a stiffening cement, so as to secure an adjacent felt thereto and to provide stiffened arches or trusses to give mechani al strength to the construction.

It is a further object to provide an insulating block including felts secured together, the block being completely enclosed by cover felts secured to the interior part so as to provide a unitary bloclc or section having stiffened arches to give rigidity to the block.

It is still another object to provide an insulation construction having a plurality of arch trusses, each of which is completely coated on the inside with a stitl'ening cement so as to impart relatively great mechanical strength to the completed structure.

it is :1 further object to provide an insulation roustruction with stiffened arches to impart mechanical strength and having a moisture proof coating on the outside.

Briefly stated. my invention in its preferred form includes a plurality of corrugated felts of asbestos paper or similar material, superposed one above the other. either with or without the interposition of flat felts between the corrugated felts. The various felts forming the block are preferably cement-ed or otherwise secured together at. a suflicien number of points to cause the same 10, 1925. Serial No. 1,512.

to form a unitary block. Cover felts, preferably flat, are applied over the interior construction and are cemented in place so as to form a complete block which is en tirely enclosed, so as to exclude moisture and so as to form enclosed air cells on the interior. At. least one felt, preferably the outer one, and the adjacent corrugated felt are completely coacted or covered on adjacent sides with cement, which serves to secure said felts together and forms a. plurality of stiffened arch trusses for giving mechanical strength to the body. The outer sides of the cover felts may be waterproofed and are preferably coated or impregnated with cement or other refractory material for resisting high temperatures, and rendering the block somewhat water resistant. If desired I may employ an additional cover felt or envelope on the outside which may be coated or impregnated with some good waterproofing material to render the finished block moisture proof.

In the drawings, which show, for illustrative purposes only, preferred forms of the invention" Fig. 1 is a top plan view of an insulating block embodying features of my invention,

parts being broken away to expose the in teri or construction;

Fig. 2 is a side view of the block shown in Fig. 1 with a part of one of the side cover felts removed:

Fig. 3 is a relatively enlarged exaggerated view of a part of an insulating block embodying features of my invention:

Fig. i is a fragmentary sectional view illustrating a slightly modified form.

In the drawings. 5--5 indicate corrugated felts with the corrugations running in one direction, while ti6 indicate corresponding felts interposed between the felts 5-5 and having corrugations extruding at right angles to the corrugations in the felts 5 5. Flat felts T--7 may be interposed between the various corrugated felts if desired. These felts may be formed of any suitable material, such as asbestos paper or similar material. The corrugated felts and interposed flat felts are preferably secured to each other by cement or otherwise at suitable points, such as along the ridges on the spective corrugations which are in contact with the next adjacent felts.

In the practical embodiment the raven tion a suflicient number of corrugated. and lat felts su iierposed one above the other, to form a blocl: of the requisite thickness. All six sides of the rectangular block shown are closed by cover felts, such as the top and bottom cover felts 88 and the silt: and end cover felts 9-9. These cover felts if separate from each other, may be cemented or otherwise secured to the interior block of felts and to each other as to form a completely enclosed constru tion. Each of the cover felts may be coated, preterably oje. both sides. with a suitable refrao tory cement for re'nerinn the block iiroproof and also iinpartii moisture resistant qualities thereto. In Figs. 1 and 2; the cover felts, as well as the u v gor and lower outer corrugated felts, have been stippled to indicate the refractory cement coating.

As shown more particularly in l ie 3, the outer corru ated felt. and a iljacent upper #11 cover felt 8 are completely coated on adjacent sides with suitable refractory stiilen ing cement 10, so as to secure the cover to the corresponding corrugated 1 and to form hollow arch trusses complete ycoat d on the inside with cement. The outside of the cover felt 8 may be also coated with cement 11, as has been indicated heretofore. The lower corrugated felt 6 and the corresponding; cover felt.- 8 are preferably similarly treated. It will be seen that the insulating block having arch trusses at the upper and lower sides as d lbed, possessed of great mechanical in and rigidity. The corrugations in the extreme upper and lower felts arc preferahl dis posed a t an angle to each other. as shown so that great resistance to lgiendine' in all directions is given to the block.

a construction as filDOVG described a block is formed in which there are a great number of air cells formed by the various felts. so that the block will have good insulating qalities and. due to the cement coated corrugated felts and corresponding: cover felts great mechanical strength is imparted to the block. T here are no expensive reinforcements or inserts in the hlocl-r. and the entire constructim'i is exceedingly lieht due to the fact that all or most of the felts on the interior of the lilocl are not cement coated lfllll'ifllfi left in a or normal state. The process of applvine he cement is a simple. well understood and in expensive one.

Since the entire body is enclosed and.

preferablycoated with heat a resistant cement. the block will r inijs insulating properties almost indefinitelv. and is eapableof sustaining eoinna i great mechanical: load. The lightness. combined with great m strei h and eflc ent insulatine j is of great importance in situations, such as employ outer felts li -l2 which are cemented or otherwise cured. as indicated at 13 in l ig. 3, to, toe cover felts 8 8.

These envelope felts lfl lil are impregnate-d or coated with some good, wz'iterproo'h ing material, as indicated at let in i ji. lln this form ofconstruction the other outside felts 9-9 are also prefer bly inuneglfuated or coated with the same waterproofing; material. Thus by Qi1VGlO})ll'1 or coating the outside of the insult int; hloclt a waterproof construction resul. block will still retain the desirable n1echan ical strength heretofore mentioned.

Since he waterproofing ma .rial also rent the insulating block air tiefht. may be desirable, when the block is sub jected to great variations in temperature. to make openings or incisions at some point so to permit the air to escape from the interior when the block is heated up.

In Fig. {-1- is shown one of the ways in which the construction may he modified. In such modified form, there are corru" felts s' s' and corrugated felts (I--t3"..

with the corrugations extending: at an. angle to the corrugations of the felts W 5. stead of having flat interposed between the corrugated felts, as in the first. form described, the fe ts 5"5' abut dire tly upon the felts 6-(l and are cemented or other wise secured thereto the points of (-oiitarl. between the felts. Outer cover felts. such 8. are preferab y provided so as to form a closed block and the top and bottom (over felts and adjacci'itcorrue'ated 'ielts: coated 'with cement. so as to provide the stiffened arches. as in the other form described.

It will, be obvious. without illustration. that this latest. form of construction may he vatcrnroofed. as heretofore described.

d hile it is desirable to have ti'tl'ened arches at the outer sides of the hlocl. so as to provide the stitfenina' means. at the greatest distance from ea h oth r. it is of course obvious that the stiffened arches need not neces arily be at the outer sides and could. be located between any two adjac ntfelts. The ii'ivention. hmvever. does 11 1- con-- templatethal allthe fel s shall be tl' ued. for such stiffening; cement adds 5; early to the weight and detracts from the insulating qualities of the product.

A i i hile l ave described prefer ed the invention. .5. do not wish l limited thereto, for changes may ic .v be made within the scope of the invention as defined in the appended claims.

I claim:

1. As an article of manufacture, a rectangular insulating block including a plurality of corrugated felts one above the other, flat felts on the six sides of said block for forming a smooth exterior, the exterior corrugated sides of the outermost corrugated felts being substantially completely coated with cement and the adjacent inner surfaces of said flat cover felts being likewise coated with cement to cause the adjacent cover and corrugated felts to adhere to each other and form stiffened hollow arch trusses to resist bending of said block, said remaining four cover felts being secured to the edges of the corrugated felts and to the adjacent edges of said other two cover felts. and the outer surfaces of the finished block being coated with waterproofing material.

2. As an article of manufacture, an insulating block including a plurality of corrugated felts one above the other, flat felts interposed between said corrugated felts, flat cover felts for the outside corrugated sides of the two outer felts, said two outer corrugated felts and corresponding cover felts being coated on adjacent sides with cement to cause the same to adhere to each other and form stiffened arches, and a waterproof envelope enclosing said felts forming the block.

3. As an article of manufacture, an insulating block including a plurality of alternate corrugated and flat felts one above the other with flat felts on the outside, the inner surfaces of the outside fiat felts and the adjacent surfaces of the corrugated felts being coated with cement to form stiffened arches to resist bending of the block, and waterproofed envelope felts enclosing all of said first mentioned felts so as to form an enclosed block.

at. As an article of manufacture, an insulating block including a plurality of corrugated felts with the corrugations of adjacent corrugated felts lying at an angle to each other, outer cover felts completely enclosing said plurality of corrugated felts, the outer corrugated felts and the adjacent cover felts being completely coated on adjacent; sides with cement for securing said felts together and forming stiffened arches to resist bending of said block.

As an article of manufacture, an insulating block including a plurality of corrugated felts, outer flat cover felts completely enclosing said plurality of corrugated felts on all sides so as to form a smooth exterior surface on all sides of said block, the outside corrugated felt at one side and the corresponding flat cover felt being substantially completely covered on adjacent sides with cement to hold said two felts together and form stiffened arches to resist bending of said block. a

6. As an article of manufacture, an insulating block including a plurality of corrugated felts. the corrugations of the felts at opposite sides of said block being disposed at an angle to each other, cover felts for said opposite sides of said block, the faces of said corrugated felts adjacent said cover felts being substantially completely covered with cement to secure the same and the adjacent cover felts together and formstittcned arches to resist bending of said block. the interior felts of said block being left in a soft state.

7. As an article of manufacture, an insulating block including an outer corrugated felt and a cover felt therefor, the surfaces of the adjacent faces of said felts being covered with cement to secure the felts together, and form a plurality of stiffened arches for resisting bending of said block, and a plurality of soft felts below said cover felt and adjacent corrugated felt.

8. As an article of manufacture, an insulating block including an outer corrugated felt and a cover felt therefor, the outer surface of said corrugated felt being coated with cement which secures the cover felt thereto, to form a plurality of stiffened arches to resist bending of said block, and a plurality of soft felts in layers below said arches 9. As an article of manufacture, an insulating block including a corrugated felt and a cover felt therefor, the adjacent surface of said corrugated felt being completely coated with cement to secure the cover felt thereto and form stiffened arches to resist bending of said block, and a plurality of soft felts in layers at one side of said firstmentioned felts.

10. As an article of manufacture, an insulating block having a plurality of closed. hollow arch trusses, said hollow trusses being completely coated on the inside with a continuous coat of cement to stiffen the same and resist bending of said block, said block including a plurality of superposed soft felts at one side of said arch trusses.

ll. As an article of manufacture, an insulating block inclui'ling a plurality of alternate. corrugated and flat felts one above the other, the adjacent faces of one of said flat felts and next corrugated felt being coated with cement to cause the same to adhere to each other and form stiffened arches to resist bending, some of said plurality of felts being left in a soft state.

12. As an article of manufacture, an insulating-block including a plurality of corrugated felts with the corrugations of ad jacent corrugated felts lying at an angle to each other, cover felts for the corrugated sides of the outer corrugated felts, the adjacent surfaces of said outer corrugated telte and fioll'GSlTJODdlDg cover felts being coated on adjacent eides with cement for securing said lelts together and forming stiffened arches to resist bending of said block, the interior felts being relatively soft and not coated with cement whereby the block is strong, yet light in Weight, mid possesses high insulating properties.

13. As an article e't Ineriu'l'eetiIre 2111 insulating block including a glurality of corrugated felts with that felts interposed betWeenat least some of said corrugated felts,

eewa cover felts for the corrugated eideeof the outer corrugated felts, the adjacent surfaces 01? said outer emrru ieted felts and corresponding; cover "felts; being coated or adjacent sides; with cement .f )r securing said felts together and forming stittened arches to resist bending of said block, the interior felts being relatively soft and not coated with cement whereby the block is strong, yet light in weight, and POSQQEQQS l igh insulating prop erties.

LUTHER B. MeluHLLAN. 

